On Tue, 15 Nov 2016, [email protected] wrote:
> From: Libin Yang <[email protected]>
>
> This patch extends the support of audio sample rate
> sync up to DP MST.
>
> Signed-off-by: Libin Yang <[email protected]>
> ---
> drivers/gpu/drm/i915/intel_audio.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_audio.c
> b/drivers/gpu/drm/i915/intel_audio.c
> index c8a1345..88ed869 100644
> --- a/drivers/gpu/drm/i915/intel_audio.c
> +++ b/drivers/gpu/drm/i915/intel_audio.c
> @@ -807,7 +807,8 @@ static int i915_audio_component_sync_audio_rate(struct
> device *kdev, int port,
> intel_encoder = get_saved_enc(dev_priv, port, pipe);
> if (!intel_encoder || !intel_encoder->base.crtc ||
> (intel_encoder->type != INTEL_OUTPUT_HDMI &&
> - intel_encoder->type != INTEL_OUTPUT_DP)) {
> + intel_encoder->type != INTEL_OUTPUT_DP &&
> + intel_encoder->type != INTEL_OUTPUT_DP_MST)) {
I think the better option is to make absolutely sure we never store
other kinds of encoders in dev_priv->av_enc_map[pipe] to begin with. I
think that's true already, but please add
if (WARN_ON(intel_encoder->type != INTEL_OUTPUT_HDMI &&
intel_encoder->type != INTEL_OUTPUT_DP &&
intel_encoder->type != INTEL_OUTPUT_DP_MST))
return;
near the beginning of intel_audio_codec_enable(), and remove the type
checks here. This reduces the confusion about different kinds of checks
after calling get_saved_enc().
BR,
Jani.
> DRM_DEBUG_KMS("Not valid for port %c\n", port_name(port));
> err = -ENODEV;
> goto unlock;
--
Jani Nikula, Intel Open Source Technology Center
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